Book	PreJuSER-41088

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png On fitting deuterated methylidyne spectra in fusion plasmas

Greenland, P. T. ; Brezinsek, S.FZJ*

2004
Forschungszentrum Jülich GmbH Zentralbibliothek, Verlag Jülich

Please use a persistent id in citations: http://hdl.handle.net/2128/253

Report No.: Juel-4156

Abstract: We discuss how the spectra of deuterated methylidyne, CD, must be analysed and fitted to experimental measurements in fusion plasmas, especially plasmas generated by the JET tokamak. The A $^{2}$Δ → X $^{2}\Pi$ spectra can be reasonably well fitted by attributing a single rotational temperature to all three vibrational levels $\upsilon$ = 0, 1, 2, but the vibrational levels themselves are not thermally populated ($\upsilon$ = 2 is depleted). Off-diagonal vibrational transitions are negligible. We conclude that the data are sufficiently well fitted for the ratio of total light emitted from this CD transition to that observed in the wavelength region 429.4 nm to 430.9 nm to be calculated to about 6% accuracy. We find that there is probably a contamination, perhaps from the 3D $^{1}\Pi$ → 2P $^{1}$Σ transition in D$_{2}$ in the 429.4 nm to 430.9 nm observation region.

Note: Record converted from VDB: 12.11.2012

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Contributing Institute(s):

1. Institut für Plasmaphysik (IPP)

Research Program(s):

1. Kernfusion und Plasmaforschung (E05)

Appears in the scientific report 2004

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Database coverage:

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